191458714449 has 16 divisors (see below), whose sum is σ = 264521523200. Its totient is φ = 123092672976.

The previous prime is 191458714441. The next prime is 191458714471. The reversal of 191458714449 is 944417854191.

It is a happy number.

It is not a de Polignac number, because 191458714449 - 2³ = 191458714441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (191458714441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9383329 + ... + 9403710.

It is an arithmetic number, because the mean of its divisors is an integer number (16532595200).

Almost surely, 2^191458714449 is an apocalyptic number.

It is an amenable number.

191458714449 is a deficient number, since it is larger than the sum of its proper divisors (73062808751).

191458714449 is a wasteful number, since it uses less digits than its factorization.

191458714449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18787164.

The product of its digits is 5806080, while the sum is 57.

The spelling of 191458714449 in words is "one hundred ninety-one billion, four hundred fifty-eight million, seven hundred fourteen thousand, four hundred forty-nine".